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1. Suggest two measures to manage the garbage we produce
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1
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5517
|
April 5, 2019
|
|
1. List the factors on which the resistance of a conductor in the shape of a wire depends
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1
|
12100
|
April 5, 2019
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Show how could you join three resistors, each of resistance 9 Ω
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1
|
846
|
April 5, 2019
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A student uses a lens of focal length 40 cm and another of -20 cm
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1
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3240
|
April 5, 2019
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(a) Why are most carbon compounds poor conductors of electricity?
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1
|
780
|
April 5, 2019
|
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2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube
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1
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1499
|
April 5, 2019
|
|
If the image formed by a spherical mirror for all positions of the object placed in front
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1
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419
|
April 5, 2019
|
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A compound 'X' on heating with excess cons, sulphuric acid at 443K gives an unsaturated compound T
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1
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1045
|
April 5, 2019
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A Mendelian experiment consisted of breeding pea plants bearing violet flowers
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1
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684
|
April 5, 2019
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“Reuse is better than recycling of materials”. Give reason to justify this staten
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1
|
616
|
April 5, 2019
|
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Why is sustainable management of natural resources necessary?
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1
|
512
|
April 5, 2019
|
|
(a) In your opinion is burning plastic an ecofriendly method of waste disposal? Why?
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1
|
2355
|
April 5, 2019
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|
Can do something to reduce our personal consumption of various natural resources
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1
|
473
|
April 5, 2019
|
|
State two advantages of conserving (a) forest, and (b) wild life
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1
|
477
|
April 5, 2019
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List four causes of damage to forests
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1
|
854
|
April 5, 2019
|
|
Forests are “biodiversity hot spots’. Justify this statement
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1
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1395
|
April 5, 2019
|
|
“What was chipko Andolan”?
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1
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9921
|
April 5, 2019
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Explain by giving example where active involement of local people lead to efficient management of forest
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1
|
906
|
April 5, 2019
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List four advantages of properly managed watershed management
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1
|
1037
|
April 5, 2019
|
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List four advantages of conserving water in the form of ground water
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1
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1140
|
April 5, 2019
|
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What is meant by tree types of ‘R’ (3-R’s) to save the environment?
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1
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678
|
April 5, 2019
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What is biodiversity? What will happens if biodiversity of an area is not preserved? Mention one effect of it
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1
|
599
|
April 5, 2019
|
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List two main causes of the pollution of water of the river Ganga
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1
|
1719
|
April 5, 2019
|
|
Everyone of us can do something to reduce our personal consumption of various natural resources
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1
|
527
|
April 5, 2019
|
|
(a) Why do we need to manage our resources carefully?
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|
1
|
542
|
April 5, 2019
|
|
Why is sustainable managment of natural resources necessary?
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1
|
485
|
April 4, 2019
|
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What is watershed managment system? List two benefits drived by the communities that participate in this system
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1
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616
|
April 4, 2019
|
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What is meant by biodiversity? List two advantages of conserving forest and wild life
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1
|
5393
|
April 4, 2019
|
|
List three problems which arise due to construction of big dams. Suggest a solution for these problems
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1
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6537
|
April 4, 2019
|
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“Burning fossil fuels is a cause of global warming.” Justify this statement
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1
|
873
|
April 4, 2019
|